I don't know if LittleBigPlanet will play better with the new controls. Some games like Resident Evile 5 are just asking for the wand. The pop it bubble will easily be better, but movement of the character might be hindered. Either way I will definitely try it out and see what works best.

EDIT: Is there and analog on the motion controller or do you use it in conjunction with a dualshock?